A 33-year-old Mexican fruit picker presents to a free clinic with subcutaneous nodular lesions along the lymphatics from the initial site of trauma 3 weeks ago caused by a plum thorn puncture. What is the nature of the most likely causative agent?
A) Acid-fast organism B) Dimorphic fungus C) Filamentous fungus D) Gram-positive coccus E) Gram-negative rod F) Helminth